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Generic tunnels

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git-svn-id: https://shorewall.svn.sourceforge.net/svnroot/shorewall/trunk@686 fbd18981-670d-0410-9b5c-8dc0c1a9a2bb
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teastep 2003-08-06 00:06:44 +00:00
parent 1f72beecc8
commit c8b9cbfd35
4 changed files with 77 additions and 2 deletions
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2
Shorewall/changelog.txt
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@ -16,3 +16,5 @@ Changes since 1.4.6
7) Added ADMINISABSENTMINDED option.
8) Fixed adding addresses to ppp interfaces.
9) Added generic tunnel support.

31
Shorewall/firewall
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@ -1187,6 +1187,34 @@ setup_tunnels() # $1 = name of tunnels file
echo " OPENVPN tunnel to $1:$p defined."
}
setup_one_generic() # $1 = gateway, $2 = kind:protocol[:port]
{
local procotol
local p=
case $2 in
*:*:*)
p=${2##*:}
protocol=${2%:*}
protocol=${2#*:}
;;
*:*)
protocol=${2#*:}
;;
*)
protocol=udp
p=5000
;;
esac
p=${p+=--dport $p}
addrule $inchain -p $protocol -s $1 $p -j ACCEPT
addrule $outchain -p $protocol -d $1 $p -j ACCEPT
echo " GENERIC tunnel to $1:$p defined."
}
strip_file tunnels $1
while read kind z gateway z1; do
@ -1220,6 +1248,9 @@ setup_tunnels() # $1 = name of tunnels file
openvpn|OPENVPN|openvpn:*|OPENVPN:*)
setup_one_openvpn $gateway $kind
;;
generic:*|GENERIC:*)
setup_one_generic $gateway $kind
;;
*)
error_message "Tunnels of type $kind are not supported:" \
"Tunnel \"$tunnel\" Ignored"

27
Shorewall/releasenotes.txt
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@ -86,3 +86,30 @@ New Features:
stop". As part of stopping, Shorewall removes eth0:0 which kills my
SSH connection to 192.168.1.5!!!
4) Given the wide range of VPN software, I can never hope to add
specific support for all of it. I have therefore decided to add
"generic" tunnel support.
Generic tunnels work pretty much like any of the other tunnel
types. You usually add a zone to represent the systems at the other
end of the tunnel and you add the appropriate rules/policies to
implement your security policy regarding traffic to/from those
systems.
In the /etc/shorewall/tunnels file, you can have entries of the
form:
# TYPE ZONE GATEWAY GATEWAY ZONE
generic:<protocol>[:<port>] <zone> <ip address>
where:
<protocol> is the protocol used by the tunnel
<port> if the protocol is 'udp' or 'tcp' then this
is the destination port number used by the
tunnel.
<zone> is the zone of the remote tunnel gateway
<ip address> is the IP address of the remote tunnel
gateway.

19
Shorewall/tunnels
View File

@ -10,13 +10,20 @@
# The columns are:
#
# TYPE -- must start in column 1 and be "ipsec", "ipsecnat","ip"
# "gre", "6to4", "pptpclient", "pptpserver" or "openvpn".
# "gre", "6to4", "pptpclient", "pptpserver", "openvpn" or
# "generic"
#
# If type is "openvpn", it may optionally be followed
# by ":" and the port number used by the tunnel. if no
# ":" and port number are included, then the default port
# of 5000 will be used
#
# If type is "generic", it must be followed by ":" and
# a protocol name (from /etc/protocols) or a protocol
# number. If the protocol is "tcp" or "udp" (6 or 17),
# then it may optionally be followed by ":" and a
# port number.
#
# ZONE -- The zone of the physical interface through which
# tunnel traffic passes. This is normally your internet
# zone.
@ -85,5 +92,13 @@
#
# openvpn:7777 net 4.33.99.124
#
# TYPE ZONE GATEWAY GATEWAY ZONE PORT
# Example 8:
#
# You have a tunnel that is not one of the supported types.
# Your tunnel uses UDP port 4444. The other end of the
# tunnel is 4.3.99.124.
#
# generic:udp:4444 net 4.3.99.124
#
# TYPE ZONE GATEWAY GATEWAY ZONE
#LAST LINE -- ADD YOUR ENTRIES BEFORE THIS ONE -- DO NOT REMOVE